Electric battery.



R, W. ERWlN.

ELECTRIC BATTERY.

APPLICATION FILED uov.3o, I915.

1 ,282,057, Patented Oct 22, 1918.

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LEEZfiE l, Specimen To all 2113mm it may concern:

Be it known that l, Bernese W men; ERWIN, a citizen of the United States, residing at Fremont, in the county of Sanduslry and State of glue, have invented e certain new and useful Electric Batteries, 0:" which the following is it full, clear, and exact description.

This invention relates to electric batteries. While theimprovement is not limited to any particular type, I find it of special value in connection with copper oxid batteries lien-*- ing an alkaline electrol te.

Referring to the drawings, the single are graphically represents the voltage characteristics of the cell, the ordinates repre' senting the voltage and the ebscissae the hours of service vwith a continuous currentdrein of one ampere.

My invention consists in the use of sulfur in the depolarizing mass and in practice I mix sulfur with the usual fiaky'copper oxid in a suitable container and oppose the same to a zinc electrode in a potassium or sodium hydroxid electrolyte. This produces a very marked change in the voltage, amounting to an increase of about .2 vol.

To get the beneficial action of the sulfur, it is not necessary to use any clefinite pro it gsiiceiien filed 39, 1525.

improvement in v portion, es varying amounts are perinis' l have good results With from 5% or" Referring especially to the drawing, curve A graphically represents the voltage of copper oxicl cell as usually made; Witlrno sulfur Curve l3 represents the voicege of the cell when 1% of sulfur has b n incorporated in the copper oxicl depolaing mass.

Curve C similarly represents the voltegewith 5% of sulfur in the copper oxid mess.

The service life of the cell is substantially increased by the nse of sulfur, es is licwn by the curves. It is therefore et'ient sulfur is a valuable addition to the cell.

Having described my invention, What I claim is 1. In a primary battery with allreline electrolyte, a negative element consisting of a mixture of copper oxid and sulfur,

2. In electric batteries, an alkaline electrolyte, a zinc electrode and e negative ele ment consisting of a mixture of" copper oairl and sulfur.

In testimony whereof, I hereunto my signature. 

